Add script for visualizing RaFTS predictions of performance metrics

[bolotinl]

A new script allows the user to plot a map of RaFTS predicted module performance and/or a scatter plot comparing RaFTS predicted performances to actual performances

Additions

• Script fs_perf_viz.py, which just requires a viz_config.yaml
• viz_config.yaml

Testing

The viz_config.yaml should require little to no customization, though it is customizeable in terms of which plots will be generated.

1. python fs_perf_viz.py "/full/path/to/viz_config.yaml"

Todos

• Finish and commit .ipynb that demonstrates the utility of fs_perf_viz.py (in progress)